the plug gap for 3.1 is 60,
the spark gap .060
1996 Chevrolet Impala SS 5.7L SFI OHV 8cylThe Spark Plug Gap.050 (In thousandths of an inch)
Copper: NGK 5858 (XR4); Iridium: NGK 7189 (XR41X).....
2005 Chevrolet Truck Express 1500 Van 2WD 4.3L SFI OHV 6cylThe Spark Plug Gap.060 (In thousandths of an inch) 2005 Chevrolet Truck Express 1500 Van 2WD 5.3L SFI 8cylThe Spark Plug Gap.040 (In thousandths of an inch)
On the passenger's side on the firewall just below where the evaporator would be.
hoe do you put then spark plug cable in the right order on a impala
http://www.classiccarauto.com/impala/how_to/images/distributor.png
Give the spark plug boot a twist to free it from the spark plug then pull it off of the spark plug by the boot.
A 2009 Chevrolet Silverado with the 5.3 engine requires a .040" spark plug gap.
Your spark plug gap info should be on a sticker in the engine compartment. On the front clip above the radiator. That's where it is on my 01 impala
The spark plug gap for a 2005 Hyundai Accent, according to spark plug manufacturers, is .044" (1.11mm)
.060